UNLISTED BUST TYPE - D. Not attested for obv. legend 1a (p. 298). General note about this issue from p. 278: "The rest of aes is devoted to four varieties of Soli Invicto Comiti, with coins ranging from rare to common. Constantine claims seven varieties in all, Maximinus four, and Licinius two". Coin should be listed after TICINUM 133.